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CZT imaging detectors for Proto EXIST

Hong, J. and Grindlay, J. E. and Chammas, N. and Copete, A. and Baker, R. G. and Barthelmy, S. D. and Gehrels, N. and Cook, W. R. and Burnham, J. A. and Harrison, F. A. and Collins, J. and Craig, W. W. (2006) CZT imaging detectors for Proto EXIST. In: Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII. Proceedings of SPIE. No.6319. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 63190S. ISBN 9780819463982.

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We describe the detector development for a balloon-borne wide-field hard X-ray (20-600 keV) telescope,ProtoEXIST. ProtoEXIST is a pathfinder for both technology and science of the proposed implementation of the Black Hole Finder Probe, Energetic X-ray Imaging Survey telescope (EXIST). The principal technology challenge is the development of large area, close-tiled modules of imaging CZT detectors (1000 cm^2 forProtoEXIST1). We review the updates of the detector design and package concept for ProtoEXIST1 and report the current development status of the CZT detectors, using calibration results of our basic detector unit - 2 x 2 x 0.5 cm CZT crystals with 2.5 mm pixels (8 x 8 array). The current prototype (Rev1) of our detector crystal unit (DCU) shows ~4.5 keV electronics noise (FWHM), and the radiation measurements show the energy resolution (FWHM) of the units is 4.7 keV (7.9%) at 59.5 keV, 5.6 keV (4.6%) at 122 keV, and 7.6 keV (2.1%) at 356 keV. The new (Rev2) DCU with revised design is expected to improve the resolution by ~30%.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Grindlay, J. E.0000-0002-1323-5314
Harrison, F. A.0000-0003-2992-8024
Additional Information:© 2006 SPIE. This work is supported in part by NASA grants NAG5-5279, NAG5-5396 and NNG06WC12G. We thank A. Capote at Aguila Technologies for help on IPB packaging.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Subject Keywords:CZT detector, hard X-ray telescope, spectral response
Series Name:Proceedings of SPIE
Issue or Number:6319
Record Number:CaltechAUTHORS:20180109-110800226
Persistent URL:
Official Citation:J. Hong, J. E. Grindlay, N. Chammas, A. Copete, R. G. Baker, S. D. Barthelmy, N. Gehrels, W. R. Cook, J. A. Burnham, F. A. Harrison, J. Collins, W. W. Craig, "CZT imaging detectors for ProtoEXIST", Proc. SPIE 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII, 63190S (30 August 2006); doi: 10.1117/12.680721;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84190
Deposited By: Tony Diaz
Deposited On:09 Jan 2018 19:29
Last Modified:15 Nov 2021 20:17

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